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General
Easy
Question
Two blocks of equal mass are tied with a light string which passes over a massless pulley as shown in figure. The magnitude of acceleration of centre of mass of both the blocks is (neglect friction everywhere)
The correct answer is:
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The centre of mass coordinates of a block of shape shown in fig. is
The centre of mass coordinates of a block of shape shown in fig. is
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Seven homogeneous blocks each of length L are arranged as shown in th figure. Each block is displaced with respect to the one in contact by L/10. The x-coordinate of the centre of mass of the system relative to the origin O is
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A rod consists of two parts made up of a homogeneous material with square type cross - section as shown. The position of C.M from the end ' O ' is
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Three identical rods each of length L and mass m are joined to form a U-shape as shown in figure. The distance of centre of mass of the combined system from the corner ' O ' is
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The co-ordinates of the centre of mass of the system as shown in figure are
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A thin uniform rod of length L is bent at its mid point as shown in the figure. The distance of centre of mass form the point ' O ' is
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Four particles of masses 2,2,4,4 kg are arranged at the corners A, B, C, D of a square ABCD of side 2m as shown in the figure. The perpendicular distance of their centre of mass from the side AB is,
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Two smooth spheres, A&B, of equal radius, lie on a horizontal table. A is of mass m, 
is of mass 3m. The spheres are projected towards each other with velocity vectors 
and 
respectively & when they collide the line joining their centres is parallel to the vector i. If the coefficient of restitution between A and B is 
The magnitude of the impulse that act at the instant of impact is.
Two smooth spheres, A&B, of equal radius, lie on a horizontal table. A is of mass m, is of mass 3m. The spheres are projected towards each other with velocity vectors and respectively & when they collide the line joining their centres is parallel to the vector i. If the coefficient of restitution between A and B is The magnitude of the impulse that act at the instant of impact is.
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Two smooth spheres, A&B, of equal radius, lie on a horizontal table. A is of mass m, is of mass 3m. The spheres are projected towards each other with velocity vectors and respectively & when they collide the line joining their centres is parallel to the vector i. If the coefficient of restitution between A and B is The loss in kinetic energy caused by the collision is.
Two smooth spheres, A&B, of equal radius, lie on a horizontal table. A is of mass m, is of mass 3m. The spheres are projected towards each other with velocity vectors and respectively & when they collide the line joining their centres is parallel to the vector i. If the coefficient of restitution between A and B is The loss in kinetic energy caused by the collision is.
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Two smooth spheres, A&B, of equal radius, lie on a horizontal table. A is of mass m, is of mass 3m. The spheres are projected towards each other with velocity vectors 
and respectively & when they collide the line joining their centres is parallel to the vector i. If the coefficient of restitution between A and B is Their velocities after impact are
Two smooth spheres, A&B, of equal radius, lie on a horizontal table. A is of mass m, is of mass 3m. The spheres are projected towards each other with velocity vectors and respectively & when they collide the line joining their centres is parallel to the vector i. If the coefficient of restitution between A and B is Their velocities after impact are
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A chain of length L and mass per unit length r is pilled on a horizontal surface. One end of the chain lifted vertically with a constant velocity v by a variable force P. What are
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B) the energy lost during the lifting of the chain ?
A chain of length L and mass per unit length r is pilled on a horizontal surface. One end of the chain lifted vertically with a constant velocity v by a variable force P. What are
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B) the energy lost during the lifting of the chain ?
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A pile of loose-link chain; mass per unit length 
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A pile of loose-link chain; mass per unit length lies on a rough horizontal surface with Coeff of friction . One end of the chain is being pulled horizontally by a constant force P. Determine the acceleration of chain
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A ball is projected from the point O with velocity 20 m/s at an angle of 60° with horizontal as shown in figure. At highest point of its trajectory it strikes a smooth plane of inclination 30° at point A. The collision is perfectly inelastic. The maximum height from the ground attained by the ball is 
A ball is projected from the point O with velocity 20 m/s at an angle of 60° with horizontal as shown in figure. At highest point of its trajectory it strikes a smooth plane of inclination 30° at point A. The collision is perfectly inelastic. The maximum height from the ground attained by the ball is
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A particle of mass 1g moving with a velocity 
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A particle of mass 1g moving with a velocity experiences a perfectly inelastic collision with another particle of mass 2g and velocity .The velocity of the combined particle is
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Two identical balls A and B lie on a smooth horizontal surface, which gradually merges into a curve to a height 3.2 m. Ball A is given a velocity 10 m/sec to collide head on with ball B, which then takes up the curved path. The minimum coefficient of Restitution 'e' for the collision between A and B, in order that B reaches the highest point C of curve. 
Two identical balls A and B lie on a smooth horizontal surface, which gradually merges into a curve to a height 3.2 m. Ball A is given a velocity 10 m/sec to collide head on with ball B, which then takes up the curved path. The minimum coefficient of Restitution 'e' for the collision between A and B, in order that B reaches the highest point C of curve.
physics-General
